Descripción
This is the extracted data of the post-logging regeneration of commercial species in forest concessions under sustainable management (FSCM) in Gabon project funded by Sud Expert Plantes Développement Durable program (SEP2D) under the AAP2-81 project code. The main aim of this project was to support logging companies involved in the certification process to monitor forest regeneration relating to Forest Stewardship for the Congo Basin Region (FSC) which recommends the forest manager to set up mechanisms to monitor natural regeneration in the areas impacted by logging according to 6.3.2 indicator. Study was carried in the certified FSCM of the Rougier-Gabon company by the Institut de Recherche en Ecologie Tropicale (IRET). To monitor forest dynamic and trees regeneration of the forest areas impacted by logging, data from 652 plots of 30 m2 established on the skid trails and the 141 others from felling gaps whose sizes vary between 3,8 to 20 m2 was exploited. Skid trails are used for log extraction. Every tree ≥ 1 cm in diameter at breast height (dbh; 1.3 m above ground level) was measured.
Registros
Los datos en este recurso de evento de muestreo han sido publicados como Archivo Darwin Core(DwC-A), el cual es un formato estándar para compartir datos de biodiversidad como un conjunto de una o más tablas de datos. La tabla de datos del core contiene 793 registros.
también existen 1 tablas de datos de extensiones. Un registro en una extensión provee información adicional sobre un registro en el core. El número de registros en cada tabla de datos de la extensión se ilustra a continuación.
Este IPT archiva los datos y, por lo tanto, sirve como repositorio de datos. Los datos y los metadatos del recurso están disponibles para su descarga en la sección descargas. La tabla versiones enumera otras versiones del recurso que se han puesto a disposición del público y permite seguir los cambios realizados en el recurso a lo largo del tiempo.
Versiones
La siguiente tabla muestra sólo las versiones publicadas del recurso que son de acceso público.
¿Cómo referenciar?
Los usuarios deben citar este trabajo de la siguiente manera:
Engone Obiang N L, Mboma R, Mba Nzuè M, Niangadouma R, Menvi Nzomo J, Magama-Mucketou A, Chézeaux É (2023): Forest dynamic and trees regeneration in the logging gaps in Gabon. v1.6. Herbier National du Gabon. Dataset/Samplingevent. https://ipt-gabon.gbif.fr/resource?r=regefor&v=1.6
Derechos
Los usuarios deben respetar los siguientes derechos de uso:
El publicador y propietario de los derechos de este trabajo es Herbier National du Gabon. Esta obra está bajo una licencia Creative Commons de Atribución/Reconocimiento (CC-BY 4.0).
Registro GBIF
Este recurso ha sido registrado en GBIF con el siguiente UUID: 3eaece88-38a5-4252-9f34-e90b05fdbfba. Herbier National du Gabon publica este recurso y está registrado en GBIF como un publicador de datos avalado por Participant Node Managers Committee.
Palabras clave
Samplingevent; plants; Gabon; post-logging regeneration
Contactos
- Proveedor De Los Metadatos ●
- Originador ●
- Punto De Contacto
- Originador ●
- Punto De Contacto
- Originador
- Originador
- Originador
- Originador
- Originador
- Punto De Contacto
- Publicador
Cobertura geográfica
Study was carried out in the certified forest concessions of Rougier-Gabon, especially those of Haut-Abanga, in the northwest (293,833 ha) and Moyabi (188,989 ha), in the southeast of Gabon.
| Coordenadas límite | Latitud Mínima Longitud Mínima [-4,171, 8,833], Latitud Máxima Longitud Máxima [2,416, 14,81] |
|---|
Cobertura taxonómica
These data that come from 793 plots contain 6251 trees including 276 species, 184 genera and 56 families. The both logging gaps are characterized by the similar floristic compositions where the light-demanding taxa as Macaranga, Alcornea, Xylopia, Discoglypremna, Dichostemma and Harungana are more abundants.
| Familia | Apocynaceae, Aptandraceae, Asteraceae, Burseraceae, Cannabaceae, Cardiopteridaceae, Centroplacaceae, Chrysobalanaceae, Clusiaceae, Connaraceae, Coulaceae, Dipterocarpaceae, Ebenaceae, Erythroxylaceae, Euphorbiaceae, Fabaceae, Gelsemiaceae, Gentianaceae, Huaceae, Hypericaceae, Irvingiaceae, Ixonanthaceae, Lamiaceae, Lauraceae, Lecythidaceae, Malvaceae, Melastomataceae, Meliaceae, Moraceae, Myristicaceae, Myrtaceae, Ochnaceae, Olacaceae, Pandaceae, Passifloraceae, Peraceae, Phyllanthaceae, Polygalaceae, Putranjivaceae, Rhamnaceae, Rhizophoraceae, Rubiaceae, Rutaceae, Salicaceae, Sapindaceae, Sapotaceae, Simaroubaceae, Stemonuraceae, Strombosiaceae, Thomandersiaceae, Urticaceae, Violaceae, Vochysiaceae |
|---|
Cobertura temporal
| Fecha Inicial / Fecha Final | 2018-06-02 / 2020-09-02 |
|---|
Datos del proyecto
Specifically, this project aims to fill data gaps through Digitalization of herbarium specimens at the National Herbarium of Gabon (LBV). The images of the scanned specimens will be linked and available online in a database that has already been developed during the previous project. We plan to scan about 2000 herbarium specimens. Categorization of medicinal, cosmetic, endemic and threatened plants using an existing database created during the a previous BID project. Further categorization will improve the database and will greatly accelerate their utilization. Habitat modeling of commercial timber species for their sustainable management in Gabon. This activity will concern the main commercial timber and threatened species. Appropriate communication tools about data to decision-makers such as the production of online checklists of medicinal, endemic and cosmetic plants, and writing policy briefs for policy-makers.
| Título | Mobilization and use of botanical data as decision-making tools in Gabon |
|---|---|
| Identificador | BID-AF2020-194-USE |
| Fuentes de Financiación | JRS Biodiversity Foundation GBIF |
Personas asociadas al proyecto:
- Publicador
Métodos de muestreo
To collect data, 652 plots was established on the skid trails and the 141 others in the felling gaps of the two forest concessions, either a total of 793 plots.
| Área de Estudio | Study was carried in two FSCM of the Rougier-Gabon company, that of Haut-Abanga (288,626 ha), in the northwest and the Moyabi one, in the southeast of Gabon (71,716 ha). Rougier-Gabon was also a project partner. |
|---|---|
| Control de Calidad | GBIF species matching and BRAHMS database was used for data quality control. After species identification in the field their confirmation was done by the Herbier national du Gabon botanists. |
Descripción de la metodología paso a paso:
- In the two FSCM of the Rougier-Gabon company, data come from 652 plots of 30 m2 in the skid trails and the 141 others whose size varies from 3.38 to 20 m2 from felling gaps. The skid trails and the felling gaps are themselves located in the annual areas cutting from 0 to 26 years old. The plots, 100 m apart from center to center, was placed along the skid trails and numbered from 1 to n; 1 being the first plot, adjacent to the road or park and n le last one, inside the forest. The plots of the felling gaps of the same area (20 m2) were successively placed in the axis which connects the stump to the crown. They were also numbered from 1 (first plot after the stump) to n, last plot of variable size X. In the two cases, every tree ≥ 1 cm in diameter at breast height (dbh; 1.3 m above ground level) was measured.
Referencias bibliográficas
- Brunck, F., Grison, F., & Maitre, H. F. (1990). Okoume (Aucoumea klaineana): a monograph. Okoume (Aucoumea klaineana): a monograph.
- Engone Obiang N.L., Ngomanda A., Hymas O., Chézeaux É. & Picard N. 2014. Diagnosing the demographic balance of two light-demanding tree species populations in central Africa from their diameter distribution. Forest Ecology and Management 313: 55–62.
- Engone Obiang Nestor, Mba Nzuè Martial-T et Niangadouma Raoul – 2019 : Régénération post exploitation des essences commerciales dans les concessions forestières sous aménagement durable au Gabon. Rapport final du projet Sud Expert Plante AAP2-81
- Gravel, D., Canham, C. D., Beaudet, M., & Messier, C. (2010). Shade tolerance, canopy gaps and mechanisms of coexistence of forest trees. Oikos, 119(3), 475-484.
- Poorter, L., & Rose, S. A. (2005). Light-dependent changes in the relationship between seed mass and seedling traits: a meta-analysis for rain forest tree species. Oecologia, 142(3), 378-387. Rougier Gabon, Plan d’aménagement des CAD du Haut Abanga et de Moyabi
Metadatos adicionales
| Identificadores alternativos | 3eaece88-38a5-4252-9f34-e90b05fdbfba |
|---|---|
| https://ipt-gabon.gbif.fr/resource?r=regefor |